Corning Pyrex Borosilicate Glass Cover for 500ml-1000ml Reaction Kettle, O-Ring Seal, 3 Side-Neck and 1 Center-Neck 29/42 Standard Taper Joints

These PYREX kettle covers are for 500mL to 1L kettle bodies (No. 6946). Covers have a sturdy wall and a 5 inch tooled flat flange at bottom which has a groove in the face to take an O-ring (115mm) for a greaseless tight seal. Center neck and three side necks are 120° apart. All four necks have full length 29/42 Standard Taper outer joints. Viton® O-ring must be ordered separately. For O-rings, see No. 6946-R115; for stainless steel McCarter kettle clamps, see No. 6946B-115.